The epub version is full of errors. It seems that someone did an OCR operation, but did not look into the results. There are hundreds of errors:
* the 0 (zero) is the letter o
* the 1 (one) is one of the letters i or I
(0 and 1 are keywords in this book)
* Italic text (to empasize words) is common text
* there are spaces in words
* Words between "" (due to spaces e.g. " text ") are not kept on one line
* Greek letters are not misssing
* Drawings are missing
* Footnotes are placed on strange place
* lines with formula is missing
etc.